81144360

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:720

約数の個数: 192

約数和(自身を含む): 297423360

約数和(自身を除く): 216279000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 31, 33, 36, 40, 44, 45, 55, 60, 62, 66, 72, 88, 90, 93, 99, 110, 120, 124, 132, 155, 165, 180, 186, 198, 220, 248, 264, 279, 310, 330, 341, 360, 372, 396, 440, 465, 495, 558, 620, 660, 661, 682, 744, 792, 930, 990, 1023, 1116, 1240, 1320, 1322, 1364, 1395, 1705, 1860, 1980, 1983, 2046, 2232, 2644, 2728, 2790, 3069, 3305, 3410, 3720, 3960, 3966, 4092, 5115, 5288, 5580, 5949, 6138, 6610, 6820, 7271, 7932, 8184, 9915, 10230, 11160, 11898, 12276, 13220, 13640, 14542, 15345, 15864, 19830, 20460, 20491, 21813, 23796, 24552, 26440, 29084, 29745, 30690, 36355, 39660, 40920, 40982, 43626, 47592, 58168, 59490, 61380, 61473, 65439, 72710, 79320, 81964, 87252, 102455, 109065, 118980, 122760, 122946, 130878, 145420, 163928, 174504, 184419, 204910, 218130, 225401, 237960, 245892, 261756, 290840, 307365, 327195, 368838, 409820, 436260, 450802, 491784, 523512, 614730, 654390, 676203, 737676, 819640, 872520, 901604, 922095, 1127005, 1229460, 1308780, 1352406, 1475352, 1803208, 1844190, 2028609, 2254010, 2458920, 2617560, 2704812, 3381015, 3688380, 4057218, 4508020, 5409624, 6762030, 7376760, 8114436, 9016040, 10143045, 13524060, 16228872, 20286090, 27048120, 40572180, 81144360]

約数ペア:

[(1, 81144360), (2, 40572180), (3, 27048120), (4, 20286090), (5, 16228872), (6, 13524060), (8, 10143045), (9, 9016040), (10, 8114436), (11, 7376760), (12, 6762030), (15, 5409624), (18, 4508020), (20, 4057218), (22, 3688380), (24, 3381015), (30, 2704812), (31, 2617560), (33, 2458920), (36, 2254010), (40, 2028609), (44, 1844190), (45, 1803208), (55, 1475352), (60, 1352406), (62, 1308780), (66, 1229460), (72, 1127005), (88, 922095), (90, 901604), (93, 872520), (99, 819640), (110, 737676), (120, 676203), (124, 654390), (132, 614730), (155, 523512), (165, 491784), (180, 450802), (186, 436260), (198, 409820), (220, 368838), (248, 327195), (264, 307365), (279, 290840), (310, 261756), (330, 245892), (341, 237960), (360, 225401), (372, 218130), (396, 204910), (440, 184419), (465, 174504), (495, 163928), (558, 145420), (620, 130878), (660, 122946), (661, 122760), (682, 118980), (744, 109065), (792, 102455), (930, 87252), (990, 81964), (1023, 79320), (1116, 72710), (1240, 65439), (1320, 61473), (1322, 61380), (1364, 59490), (1395, 58168), (1705, 47592), (1860, 43626), (1980, 40982), (1983, 40920), (2046, 39660), (2232, 36355), (2644, 30690), (2728, 29745), (2790, 29084), (3069, 26440), (3305, 24552), (3410, 23796), (3720, 21813), (3960, 20491), (3966, 20460), (4092, 19830), (5115, 15864), (5288, 15345), (5580, 14542), (5949, 13640), (6138, 13220), (6610, 12276), (6820, 11898), (7271, 11160), (7932, 10230), (8184, 9915)]